Currently I am building a production level test bench which can handle a large quantity of devices under test.
I am looking for an NI device which can measure the current/power consumption from multiple units (all the same device).
I currently am using a modified power cable that I have connected to a power supply to get the current/voltage readings from each unit, but I'd like to be able to take this data and integrate it into some existing LabView test stand code hence the search for an NI DAQ device.
My idea is currently to add a 0.1 ohm resistor in series to a portion of the power cable in order to measure the voltage drop and in turn get the current reading that is in-line to my device. I'm trying to avoid having to connecting an NI device in series to measure the current as I'd like interfere with the signal across the cable as little as possible (hence using a 0.1 ohm resistor). Therefore I'm trying to find a solution that can effectively get the voltage off the 0.1 ohm resistor.
My expected voltage draw from my device is ~5V and the expected current during full operation is ~110mA.
Do any of you have any suggestions on an NI Device that would be able to perform this task? I am also willing to modify the design if there is possibly a more common NI device solution for this.